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Sillicon may get replaced for indium-gallium-arsenide in chips

10 posts · originally from https://geek.digit.in/community/threads/sillicon-may-get-replaced-for-indium-gallium-arsenide-in-chips.149736/

vickybat
vickybat Original post #1
Dec 8, 2011 at 8:33 PM
3D III-V Transistors Could Enable Lighter Notebooks

Yup guys, scientists say indium-gallium-arsenide has superior electron flow resulting in smaller and efficient chips. Read the link for more detail.:)
coderunknown
Dec 8, 2011 at 9:19 PM
but when wil this be applied? 16nm node or 11nm?
Liverpool_fan
Dec 8, 2011 at 9:54 PM
Arsenide? Prepare for even worse consequences regarding e-waste.
skeletor
Dec 8, 2011 at 10:09 PM
Can't see this happening on a major scale. Silicon is the 2nd most abundant element in the Earth's crust.

We'd need other viable alternatives or advancements.
A
Dec 9, 2011 at 12:58 AM
Superior electron flow would only matter when leakage currents and heat issues are significant. What the scientists are actually getting is that they created a nanostructure engineered for better electron flow.

Note that "better" here means unobstructed by physical barriers like a molecule blocking the path and the like. The most significant effect of this is less heat generation.
Sarath
Sarath #8
Dec 9, 2011 at 10:47 PM
Silicon is found in sand. Where is this trio available? I don't see it being economical. :/
Alok
Alok #9
Dec 10, 2011 at 7:44 PM
What about availability??
dashing.sujay
Dec 11, 2011 at 12:05 AM
Wikipedia said:
GaAs is so high that a corresponding layer would be only a few micrometers thick and mechanically unstable.
Silicon is a pure element, avoiding the problems of stoichiometric imbalance and thermal unmixing of GaAs.
Silicon has a nearly perfect lattice, impurity density is very low and allows to build very small structures (currently down to 25 nm). GaAs in contrast has a very high impurity density, which makes it difficult to build ICs with small structures, so the 500 nm process is a common process for GaAs.

Wikipedia said:
Due to its arsenic content, it is considered highly toxic and carcinogenic

And yeah, availability will be an issue, making it more expensive; but lets hope its other features may balance the pricing but still not as Si IMO.